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Fedora 44 tmux 3.7b Use After Free Bug Advisory 2026-f5dd9fb83f

fedora
Calendar Grey July 10, 2026
Dist Fedora Esm H88
Recent Fedora update for tmux addresses bugs, including a use-after-free issue. Installation instructions included.
fdf6afc update to 3.7b fixes rhbz#2498485 CHANGES FROM 3.7a TO 3.7b Fix so that the end of a synchronized update again triggers a redraw

Summary

tmux is a "terminal multiplexer." It enables a number of terminals (or

windows) to be accessed and controlled from a single terminal. tmux is

intended to be a simple, modern, BSD-licensed alternative to programs such

as GNU Screen.

Update Information:

fdf6afc update to 3.7b fixes rhbz#2498485 CHANGES FROM 3.7a TO 3.7b Fix so that the end of a synchronized update again triggers a redraw. CHANGES FROM 3.7 TO 3.7a Fix crash in break-pane when no name is provided. Scrollbar options are now cached rather than being looked up for every redraw (issue 5298). Only forbid #( in names, allow #[, empty names, : and .

Topics%20covered

Topics Covered

security advisory fedora update bug use-after-free tmux

Change Log

* Thu Jul 9 2026 Filipe Rosset - 3.7b-2 - fix 3.7b build * Thu Jul 9 2026 Filipe Rosset - 3.7b-1 - update to 3.7b fixes rhbz#2498485

References


[ 1 ] Bug #2487530 - CVE-2026-11623 tmux: tmux: Use-after-free vulnerability [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2487530 [ 2 ] Bug #2498485 - update to 3.7b https://bugzilla.redhat.com/show_bug.cgi?id=2498485

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-f5dd9fb83f' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
important
Lowest
Low
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Critical

Name: tmux
Product: Fedora 44
Version: 3.7b
Release: 2.fc44
URL: https://tmux.github.io/
Summary: A terminal multiplexer

Topics%20covered

Topics Covered

security advisory fedora update bug use-after-free tmux

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